From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Graph showing the output curve and requirements for a 20 HP Dynamo.
| Identifier | ExFiles\Box 165\6\ img149 | |
| Date | 1st October 1929 | |
| AMPERE OUTPUT APPROX: OPERATING VOLTAGE 17.9 17.7 17.5 17.3 17.05 16.9 16.5 16.2 15.9 15.45 15.2 14.8 14.4 14.0 20 H.P. REPRESENTATIVE OUTPUT CURVE OF STANDARD 20 H.P. DYNAMO AT 80°C SPECIFIED CURVE OF OUTPUT REQUIREMENTS FOR 20 H.P. DYNAMO. DYNAMO R.P.M. CHASSIS M.P.H. 11/50 AXLE, 31.4" DIA: TYRES. Handwritten: P.R.R.N. (Cancelled) V/3/264 11.7.28 1.10.29 | ||